Royal Society of Chemistry

A gram-scale route to phlegmarine alkaloids: rapid total synthesis of (-)-cermizine B

Chem. Commun. - 12 June, 2014 - 05:17

Chem. Commun., 2014, 50,7099-7102
DOI: 10.1039/C4CC01708K, CommunicationBen Bradshaw, Carlos Luque-Corredera, Josep Bonjoch
The asymmetric total synthesis of the cis-phlegmarine alkaloid cermizine B was achieved rapidly and on a gram-scale by an uninterrupted eight-step sequence and a final reduction step.
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A stable metallic state of (TTPCOO)2NH4 with a mobile dopant

Chem. Commun. - 12 June, 2014 - 05:17

Chem. Commun., 2014, 50,7111-7113
DOI: 10.1039/C4CC00678J, CommunicationTakeshi Terauchi, Satoshi Sumi, Yuka Kobayashi, Toshikazu Nakamura, Ko Furukawa, Yohji Misaki
Ammonium tetrathiapentalene carboxylate [(TTPCOO)2NH4], which was prepared via protonic defect-induction doping, exhibits metallic behavior down to 4 K.
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Ultrahigh porosity in mesoporous MOFs: promises and limitations

Chem. Commun. - 12 June, 2014 - 05:17

Chem. Commun., 2014, 50,7089-7098
DOI: 10.1039/C4CC00524D, Feature ArticleIrena Senkovska, Stefan Kaskel
Mesoporous MOFs are currently record holders in terms of the specific surface area and pore volume. The rational strategies for synthesis of mesoporous MOFs, crystallinity, dynamic properties, functional groups, and wide range tunability render these materials as exceptional solids.
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A "light-up" and "spectrum-shift" response of aptamer-functionalized silver nanoclusters for intracellular mRNA imaging

Chem. Commun. - 12 June, 2014 - 05:17

Chem. Commun., 2014, 50,7107-7110
DOI: 10.1039/C4CC00160E, CommunicationJingjing Li, Jia You, Yinping Zhuang, Cuiping Han, Junfeng Hu, Aming Wang, Kai Xu, Jun-Jie Zhu
Aptamer functionalized silver nanoclusters exhibited a "light-up" and "spectrum-shift" response to target DNA in vitro and could further image the tumor-related mRNA in living cells.
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Adsorption dominant catalytic activity of a carbon dots stabilized gold nanoparticles system

Dalton Transactions - 11 June, 2014 - 10:54

Dalton Trans., 2014, Advance Article
DOI: 10.1039/C4DT00630E, PaperRuihua Liu, Juan Liu, Weiqian Kong, Hui Huang, Xiao Han, Xing Zhang, Yang Liu, Zhenhui Kang
Carbon dots with abundant functional groups (-OH, -COOH, C[double bond, length as m-dash]O) on their surface were specially designed to enhance the adsorption capacity and the catalytic activity of AuNPs.
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CuI catalyzed sulfonylation of organozinc reagents with sulfonyl halides

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4295-4299
DOI: 10.1039/C4OB00638K, CommunicationYing Fu, Wenbo Zhu, Xingling Zhao, Helmut Hugel, Zhouqiang Wu, Yuhu Su, Zhengyin Du, Danfeng Huang, Yulai Hu
A general and efficient CuI/TMEDA catalyzed nucleophilic addition of functionalized organozinc reagents to organic sulfonyl chlorides has been developed for both aromatic and aliphatic sulfone synthesis.
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Nanomolar fluorogenic detection of Al(III) by a series of Schiff bases in an aqueous system and their application in cell imaging

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4445-4453
DOI: 10.1039/C4OB00329B, PaperSanyog Sharma, Maninder Singh Hundal, Amandeep Walia, Vanita Vanita, Geeta Hundal
Three Schiff bases, showing nanomolar, naked eye detection of Al(III) under UV light, in an aqueous system are reported.
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Asymmetric synthesis of tetrahydroquinolines through supramolecular organocatalysis

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4300-4304
DOI: 10.1039/C4OB00570H, CommunicationDhevalapally B. Ramachary, Kodambahalli S. Shruthi
Functionalized chiral tetrahydroquinolines were synthesized through supramolecular organocatalysis using quinidine-NH-thiourea 3c/L-phenylalanine 4i followed by reductive amination from the simple substrates.
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A reagent for safe and efficient diazo-transfer to primary amines: 2-azido-1,3-dimethylimidazolinium hexafluorophosphate

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4397-4406
DOI: 10.1039/C4OB00515E, PaperMitsuru Kitamura, So Kato, Masakazu Yano, Norifumi Tashiro, Yuichiro Shiratake, Mitsuyoshi Sando, Tatsuo Okauchi
Organic azides were synthesized from primary amines by diazo-transfer with a safe and stable crystalline reagent, 2-azido-1,3-dimethylimidazolinium hexafluorophosphate (ADMP).
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Efficient one-step synthesis of 4-amino substituted phthalimides and evaluation of their potential as fluorescent probes

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4461-4470
DOI: 10.1039/C4OB00342J, PaperTomas Kindahl, Erik Chorell
Chemistry: One step, high yields, general, atom efficient, no additives. Compounds: Highly fluorescent and solvatochromic, many display non-toxic properties.
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A stereoselective approach to indolizidine and pyrrolizidine alkaloids: total synthesis of (-)-lentiginosine, (-)-epi-lentiginosine and (-)-dihydroxypyrrolizidine

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4454-4460
DOI: 10.1039/C4OB00461B, PaperShruti Vandana Kauloorkar, Vishwajeet Jha, Ganesh Jogdand, Pradeep Kumar
The total synthesis of (-)-lentiginosine, epi-1,2-lentiginosine and dihydroxypyrrolizidine is reported from an aldehyde as a starting material using organocatalysis and asymmetric dihydroxylation as key steps.
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Organocatalytic enantioselective construction of multi-functionalized spiro oxindole dienes

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4372-4385
DOI: 10.1039/C4OB00545G, PaperXiao-Fei Huang, Ya-Fei Zhang, Zheng-Hang Qi, Nai-Kai Li, Zhi-Cong Geng, Kun Li, Xing-Wang Wang
A highly stereoselective Michael-cyclization-tautomerization reaction of isatylidene malononitriles with [small alpha],[small alpha]-dicyanoalkenes was developed via organocatalysis. An anomalous temperature effect on the enantioselectivity is disclosed for this transformation.
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Using computational methods to explore improvements to Knolker's iron catalyst

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4361-4371
DOI: 10.1039/C4OB00353E, PaperXi Lu, Yawei Zhang, Nicholas Turner, Mingtao Zhang, Tonglei Li
Some improvements were predicted for Knolker's catalyst via density functional method.
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Rhodium(III)-catalyzed coupling of N-sulfonyl 2-aminobenzaldehydes with oxygenated allylic olefins through C-H activation

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4290-4294
DOI: 10.1039/C4OB00704B, CommunicationTingting Yang, Tao Zhang, Shangdong Yang, Shanshan Chen, Xingwei Li
N-Sulfonyl-2-aminobenzaldehyde undergoes C-H activation and coupling with oxygenated allylic olefins under redox-neutral conditions with high efficiency.
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Lewis acid promoted dual bond formation: facile synthesis of dihydrocoumarins and spiro-tetracyclic dihydrocoumarins

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4347-4360
DOI: 10.1039/C4OB00490F, PaperPedireddi Niharika, Bokka Venkat Ramulu, Gedu Satyanarayana
Lewis acid (FeCl3) mediated dual bond (C-C and C-O) formation for synthesis of 3,4-dihydrocoumarins is presented.
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Synthesis and biological evaluation of hybrids from farnesylthiosalicylic acid and hydroxylcinnamic acid with dual inhibitory activities of Ras-related signaling and phosphorylated NF-[small kappa]B

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4517-4530
DOI: 10.1039/C4OB00023D, PaperYong Ling, Zhiqiang Wang, Xuemin Wang, Ying Zhao, Wei Zhang, Xinyang Wang, Li Chen, Zhangjian Huang, Yihua Zhang
Hybrid 5f significantly inhibited both Ras-related signaling and phosphorylated NF-[small kappa]B, which may synergistically contribute to its apoptosis induction and tumor growth inhibition in vitro and in vivo.
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Scaffolded multiple cyclic peptide libraries for protein mimics by native chemical ligation

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4471-4478
DOI: 10.1039/C4OB00190G, PaperH. van de Langemheen, M. van Hoeke, H. C. Quarles van Ufford, J. A. W. Kruijtzer, R. M. J. Liskamp
The accessibility to collections, libraries and arrays of cyclic peptides is increasingly important since cyclic peptides may provide better mimics of the loop-like structures ubiquitously present in and - especially - on the surface of proteins.
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Hypervalent iodine: a powerful electrophile for asymmetric [small alpha]-functionalization of carbonyl compounds

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4278-4289
DOI: 10.1039/C4OB00318G, Review ArticleDao-Qing Dong, Shuang-Hong Hao, Zu-Li Wang, Chao Chen
Environmentally friendly hypervalent iodine reagents are unusually effective promoters of asymmetric [small alpha]-functionalization of carbonyl compounds.
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A highly efficient catalyst of a nitrogen-based ligand for the Suzuki coupling reaction at room temperature under air in neat water

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4511-4516
DOI: 10.1039/C3OB42517G, PaperShiwen Liu, Meiyun Lv, Daoan Xiao, Xiaogang Li, Xiuling Zhou, Mengping Guo
Glycine is used to prepare an air-stable and water-soluble catalyst for the Suzuki-Miyaura reaction. In the presence of 0.1% [PdCl2(NH2CH2COOH)2], excellent catalytic activity is observed at room temperature under air in neat water.
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"One-pot" access to dihydrofurans via tandem oxidative difunctionalization and ring contraction of aminopyrans

Org. and Biomol. Chem. - 11 June, 2014 - 00:54

Org. Biomol. Chem., 2014, 12,4412-4420
DOI: 10.1039/C4OB00324A, PaperSanthosh Reddy Mandha, Manjula Alla, Jagadeesh Babu Nanubolu
A new strategy for the construction of dihydrofuran derivatives by one-pot tandem oxidative difunctionalization and base catalysed ring contraction of aminopyrans.
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